Deep-well pumpiwg-head



A. J. HAMLIN.

DEEP WELL PUMPING HEAD.

APPLiCATlON FILED MAR. 8. 19's.

1 3%,467 Patented Nov. 4, 1919.

3 SHEETS-SHEET 1.

| l I 4 i l A. J. HAMLIN.

DEEP WELL PUMPING HEAD APPLICATION FILED MAR. 8. 1919.

1,320,467. Patented NOV. 4, 1919.

3 SHEETSSHEET 2.

A. J. HAMLIN.

DEEP WELL PUMPING HEAD.

APPLICATION FILD MAR. 8. 1919.

1,329,467. Patented Nov. 4, 1919.

3 SHEETS-SHEET 3f ALFRED J. HAMLIN, OF BALTIMORE, MARYLAND.

DEEP-VIELL PUMPING-HEAD.

Application filed March 8. 1919.

To all whom it may concern:

Be itknown that I, ALFRED J. HAMLIN, a citizen of the United States, residing at Baltimore city, State of Maryland, have invented certain new and useful Improvements in Deep -VVell Pumping -Heads, of which the following is a specification.

This invention relates to drive gearing for pumps having a reciprocating plunger, and its object is to provide a novel and improved gearing which is driven from a power shaft constantly turning in one direction, a change in the direction in which the pump plunger is driven being automatically effected by a mechanism to be hereinafter described in detail.

In order that the invention may be better understood, reference is had to the accompanying drawings forming a part of this specification.

The preferred embodiment of the invention has been illustrated, but it will be understood that various changes and modifications may be made without a departure from the spirit and scope of the invention as claimed, hereinafter.

In the drawings,

Figure 1 is alongitudinal section of the mechanism;

Fig. 2 is a plan view thereof;

Fig. 3 is an elevation;

Fig. 4 is a sectional detail;

Fig. 5 is an end view of a part shown in Fig. 4;

Fig. 6 is an elevation of a portion of the pump rod;

Fig. 7 is an elevation of a clutch;

Fig. 8 is a vertical section of said clutch;

Fig. 9 is an elevation showing a modification;

Fig. 10 is a crosssection on the line 1010 of Fig. 9;

Fig. 11 is an elevation showing another modification Fig. 12 is a plan view of said modifica tion, partly in section;

Fig. 13 is an elevation, largely diagram. matic showing a further modification. and

Fig. 14 is an elevation showing a slightly different arrangement of the parts shown in Fig. 11.

Referring specifically to the drawings, 1 denotes a pump rod having at its upper end racks 2"and 3, located on opposite edges.-

' A drive pinion 4 is in mesh. with the rack Specification of Letters Patent.

Patented Nov. 4, 1919.

Serial No. 281.501.

2 and a pinion 5 with the rack 8, these pinions receiving motion through a driving means to be presently described.

At 6 is shown a motor or other suitable power source having a worm 7 on its drive shaft which is in mesh with a worm wheel 8 on a shaft 9 supported in suitable bearings 10 on frame members 11. The shaft 9 may also be directly connected to the power source. On one end of the shaft 9 is fast a gear wheel 12 and on the other end a gear wheel 13. The gear wheel 12 is in mesh with a gear wheel 14, and the gear wheel 13 is in mesh with a gear wheel 15.

The gear wheel 14 is loose on a shaft 16 and the gear wheel 15 is loose on a shaft 17. On the shaft 16 is fast the pinion 4 and on the shaft 17 is fast the pinion 5. It will therefore be seen that the pinions 4 and 5 receive motion from the shaft 9 when the gears 14 and 15 are locked to their respective shafts 16 and 17, the gear 12 driving the gear 14 and the gear 18 the gear 15.

The clutch for locking the gear wheel 14 to the shaft 16 comprises a split friction band 18 carried by a drum 19 seating in a recess in the gear wheel and made fast to the shaft. When this band is expanded into frictional engagement with the wall of the recess, the motion of the gear wheel is transmitted to the shaft, these two ele ments being now locked and turning together. The friction band is expanded by a cam 20 seating between the ends thereof and carried by a lever 21. On the shaft is slidably mounted a clutch-actuating collar 22 having an incline at one end which faces a set screw 23 carried by the lever 21. When the collar is shifted in the direction of the set screw to bring its incline in engagement therewith, the lever 21 is actuated to turn the cam 20 and thus spread or expand the band 18 for the purpose herein-- before described. The collar is operated by a lever 24 connected thereto in any suit able manner and fulcrumed at one end, as shown at 25, to any convenient portion of the frame work. The other end of the lever carries an abutment in the form of a roller 26. the purpose of which will be presently made clear.

A clutch similar to the one hereinbefore described is provided for coupling the gear 1'5 and the shaft 17. The control lever of this clutch is shown at 27 and its roller at 28.

The following mechanism is provided for automatically actuating the clutches in alternate order:

On one side of the pump rod 1, at the top thereof, is an abutment 29, and below the same, on the other side, is an abutment 30. Two crossed, and pivotally connected levers 31 ard 32 straddle the pump rod and carry rollers 33 and 34 which are in the path of the abutments, one roller being in the path of one abutment, and the other roller in the path of the other abutment. The two levers are pivotally connected where they cross, as shown at 35, and their ends carrying the rollers are connected by a spring 36 tending to draw said ends to gether and hold the rollers in contact with opposite sides of the pump rod, and in the path of the abutments thereon. The other ends of the levers carry rollers 37 and 38, respectively.

On the shaft 9 is loosely mounted a rotatabl member 39 for operating the lever 24, this member having an oblique or inclined edge 40 with which the roller 26 is in contact. When the member 39 starts to turn, its oblique or cam edge presses against the roller 26 and thereby causes the lever 24 to swing to release the clutch which couples the gear wheel 14 to the shaft 16 as hereinbefore described.

The member 39 is adapted to be coupled to the shaft 9 to inake a turn for th purpose stated, this being done by latch pins 41 carried slidably in transverse apertures in the gear wheel 12, and adapted to engage a rib 42 on the back of the member facing said gear wheel. These latch pins are held normally retracted by springs 43 and they are connected to a disk 44 which is engageable by the roller 38 of the lever 31. When the lever 31 is swung, the roller 38 presses on the pins 41 into engagement with the rib 42, whereupon the motion of the gear wheel 12 is transmitted to the member 39, and its cam edge causes the lever 24 to swing and release the clutch which looks the shaft 16 to the gear wheel 14. I

A similar mechanism for operating theclutch lever 27 is provided, the member 45 corresponding to the member 29 being controlled by the lever 32.

{The shafts 16 and 17 are also geared together by pairs of pinions 46 and 47, and the clutch levers 24 and 27 are connected by a. link 48 so that they may operate togethen. I

In operation, when the shaft 16 is coupled to the gear wheel 14, the pinion 4, through the rack 2 gives the pump rod 1 its downward stroke. The shaft 17 is now free of the gear wheel 15 and hence it receives. motion through the pinions 46 and 47 and. this motion is transmitted to the pump rod. through the pinion 5 and. the. rack 3., On.

the upward stroke, the shaft 17 is the driver, the shaft 16 now running idle. The shifting of the driving force from one shaft to the other is automatically efiected at the ends of the strokes of the pump rod. At the end of the down stroke, the abutment 29 engages the roller 33 and causes the lever 31 to swing in a direction to couple the member 39 to swing the lever 24 in a direction to disconnect the shaft 16 from the gear wheel 14. At the same time, the lever 27, through the connection 48, is swung to 0on nect the shaft 17 to the gear wheel 15, whereupon the upward stroke commences. At the end of the up stroke, the abutment 30 engages the roller 34, and the lever 32 swings to clutch the member 45, whereupon the lever 27 is swung to uncouple the shaft 17 from the gear wheel 15, and at the same time the lever 24 is swung to couple the shaft 16 to the gear wheel 14 for the next or downward stroke.

At 49 is shown a winding drum adapted to be driven by being coupled to the pump driving means and for this purpose, the drum has gears 50 at its ends adapted to come in mesh with the gears 46, by swinging the drum bodily. The lateral shift of the drum to couple the same to the driving means and for uncoupling it, is effected by the usual eccentrically arranged supporting means of the drum 51, a crank handle 52 being provided for making the shift.

Figs. 9 and 10 illustrated the mechanism applied to a pump having a reciprocating cylinder moving in opposite directions from that of the piston. The pump rod 1 with its racks 2 and 3, and pinions 4 and 5am the same as before. However the pinions are also in mesh with racks 53 operatively connected to the cylinder (not shown), and supported by guide bars 54.

Figs. 11 and 12 illustrate a slightly modified form of gearing for producing a'slow powerful upward stroke, and alike downward or return stroke. Here, the pinions shown at 55, correspondingto the pinions 4 and 5, are in mesh with racks 56 corresponding to the racks 2 and 3. The pinions 55 are in mesh with each other as shown and are mounted on shafts and 71. Gears 14 and 15 both of which are of like diameter are mounted on the shafts 70 and 71 respectively, said gears being driven by gears 72 corresponding to the gears 12 and 13, these last mentioned gears also beingof-like diameter relative to each other. r

In this way rotation of the shafts 70 and 71 is uniform and the rack 56 is moved upwardly and downwardly at the same rate of speed.

In Fig. 13, 57 is a shaft corresponding to drive shaft 9. On this shaft is fast a large gear wheel 58 and a pinion 59. The gear wheel 58 is in mesh with a pinion 60, and the pinion 59 is in mesh with a gear wheel 61.

' Pinion 60 is on a shaft 62, and gear wheel 61 on a shaft 63. The shafts 62 and 63 correspond to the shafts 16 and 17, respectively, and the gear members 60and' 61 to the gear members 14 and 15, whereas the gear members 57 and 58 correspond to the gear members 12 and 13. By reason of the relative proportions of the gears, it will be evident that the down stroke, through gears 58 and 60, is quicker than the up stroke through gears 57 and 61.

Fig. 1a shows the same pinion and rack gearing as that in Fig. 11, except that the pinions 55 are not in mesh with each other, and each pinion is in mesh with both racks 56, and the racks 56 move in opposite directions relative to each other.

I claim:

1. The combination with a pump rod having racks on opposite sides, pinions in mesh with the respective racks, shafts carrying the pinions, driving means for the respective shafts, and means for coupling the shafts to their driving means for uncoupling the same, said means operating in alternate order, and means on the pump rod controlling the coupling means.

2. The combination with a pump rod having racks on opposite sides, pinions in mesh with the respective racks, shafts carrying the pinions, driving means for the respective shafts, means for coupling the shafts to their driving means and for uncoupling the same, said means operating in alternate order, levers controlling the coupling means,

and means on the pump rod for operating the levers.

3. The combination with a pump rod having racks on opposite sides, pinions in mesh with the respective racks, shafts carrying the pinions, driving means for the respective shafts, means for coupling the shafts to their driving means and for uncoupling the same, said means operating in alternate order, levers controlling the coupling means, and abutments on the pump rod into the path of which the levers extend and by which they are operated.

4. The combination with a pump rod having racks on opposite sides, pinions in mesh with the respective racks, shafts carrying the pinions, driving means for the respective shafts, means for coupling the shafts to their driving means and for uncoupling the same, said means operating in alternate order, levers controlling the coupling means, and abutments on the pump rod into the path of which the levers extend and by which they are operated, said abutments being located to engage the levers at the ends of the respective strokes of the pump rod.

5. The combination with a pump rod hav ing racks on opposite sides, pinions in mesh with the respective racks, shafts carrying connection between each gear and its shaft and for breaking such connection, and'actuating means for said connections operating in alternate order.

6. The combination with a pump rod having racks on opposite sides, pinions in mesh with the respective racks, shafts carrying the pinions, driving gears loose on the pinion shafts, means for establishing a driving connection between each gear and its shaft and for breaking such connection, actuating means for said connections operating in alternate order, and means on the pump rod controlling the actuating means.

7. The combination with a pump rod hav ing racks on opposite sides, pinions in mesh with the respective racks, shafts carrying the pinions, driving gears loose on the pinion shafts, means for establishing a driving connection between each gear and its shaft and for breaking such connection, actuating means for said connections operating in alternate order, levers controlling the actuating means, and means on the pump rod for operating the levers.

8. The combination with a pump rod having racks on opposite sides, pinions in mesh with the respective racks, shafts carrying the pinions, driving gears loose on the pinion shafts, means for establishing a driving connection between each gear and its shaft and for breaking such connection, actuating means for said connections operating in alternate order, levers controlling the actuating means, and abutments on the pump rod into the path of which the levers extend and by which they are operated.

9. The combination with a pump rod having racks on opposite sides, pinions in mesh with the respective racks, shaftscarrying the pinions, driving gears loose on the pinion shafts, means for establishing a driving connection between each gear and its shaft and for breaking such connection, actuating means for said connections operating in alternate order, levers controlling the actuating means, and abutments on the pump rod into the path of which the levers extend and by which they are operated, said abutments being located to engage the levers at the ends of the respective strokes of the pump rod.

10. The combination with a pump rod having racks on opposite sides, pinions in mesh with the respective racks, shafts carrying the pinions, driving gears loose on the pinion shafts, clutches for coupling the gears to the shafts, levers for operating the clutches, a connection between the levers, actuating means for the levers, and means on the pump rod controlling the actuatin'g means.

11. The combination with a pump rod having racks on opposite sides, pinions in mesh with the respective racks, shafts carrying the pinions, driving gears loose on the pinion shafts, clutches for coupling the gears to the shafts, levers for operating the clutches, a connection between the levers, actuating means for the levers, levers operating said actuating means, and means on the pump rod for operating the last-mentioned levers.

12. The combination with a pump rod having racks on opposite sides, pinions in mesh with the respective racks, shafts carrying the pinions, driving gears loose on the pinion shafts, clutches for coupling the gears to the shafts, levers'for operating the clutches, a connection between the levers, actuating means forthe levers, levers operating said actuating means, and abutments on the pump rod into the path of which the last-mentioned levers extend and by which they are operated.

13. The combination with a pump rod mesh with the respective racks, shafts carry- .ing the pinions, driving gears loose on the pinion shafts, clutches for coupling the gears to the shafts, levers for operating the clutches, a connection between the levers, actuating means for the levers, levers operating said actuating means, and abutments on the pump rod into the path of which the last-mentioned levers extend and by which they are operated, said abutments being located to engage the levers at the ends of the respective strokes of the pump rod.

In testimony whereof I afiiX my signature in the presence of two witnesses.

ALFRED J. HAMLIN.

Witnesses:

HOWARD D. ADAMS, E. WALTON BREWINGTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

